Greenpeace campaigners Viola Wohlgemuth and Dirk Zimmermann prepare a wipe sample at a playground in Leverkusen. A huge explosion and fire had occurred in the tank storage of a disposal center at Chempark Leverkusen on July 27, 2021. There is a health risk for the residents, burned chemicals could lead to respiratory irritations. A Greenpeace team is on site to take samples.